He will appear alongside experts such as John Wiesman, Washington state's secretary of health, and Saad B. Omer, a professor at Emory University in Georgia, according to the committee's website.

"I'm looking forward to speaking in Washington, DC," Lindenberger said in the video.

I'm happy to share that I'll be testifying at a hearing for the committee of health, education labor, and pensions about the importance of vaccinations! Check out the video here!https://t.co/sPM12poJVi

Lindenberger's story has caught on amid measles outbreaks that have affected more than 100 people in the United States this year, prompting increasing scrutiny of parents who do not get their children vaccinated.

The teenager said he lived for years without being vaccinated because of his mother's belief in vaccine conspiracies. So Lindenberger began to do his own homework, consulting scientific research and the Centers for Disease Control and Prevention.

In November, he posted on Reddit asking for advice about how to get vaccinated. In December, Lindenberger went to the Ohio Department of Health in his hometown and received a battery of standard vaccinations that included hepatitis A, hepatitis B, influenza and HPV, according to records reviewed by The Washington Post.

Because he was 18, he could legally make the decision to do so.

"I looked into it; it was clear there was way more evidence in defense of vaccines," he told The Post in February.

His mother, Jill Wheeler, told Undark, an online science magazine that first reported Lindenberger's story, that her son's decision was "like him spitting on me, saying 'You don't know anything, I don't trust you with anything.' "

According to Lindenberger's Reddit post, his father was less resistant to the idea since he was of legal age.

Ohio is one of 17 states that allow parents to opt out of vaccines for philosophical or moral reasons. Lindenberger has four younger siblings, including a 2-year-old sister who he says will probably not be vaccinated.

"It breaks my heart that she could get measles and she'd be done," Lindenberger told The Post.

Washington state is hoping to pass a bill to narrow the exemptions for vaccines but is facing opposition from "anti-vaxxers," who support a debunked conspiracy theory that vaccines cause health conditions such as autism.

The CDC says measles outbreaks can be linked to an increase in the number of people who travel abroad and bring the disease back to the United States and to communities with pockets of individuals who aren't vaccinated.

According to the CDC, there were 17 outbreaks nationwide last year, primarily concentrated in three states.

The outbreaks were associated with some communities of Orthodox Jews who chose not to vaccinate and contracted the disease when travelers returned from Israel, which was experiencing an outbreak.

In 2017, an outbreak that affected 75 people in a Somali American community in Minnesota was attributed to low vaccination coverage.